Hoffman, R. L. (1999). Checklist of the millipedes of North and Middle America. Virginia Museum of Natural History, special publication, 8: 1-584. Martinsville

Hoffman, R. L. (1999). Checklist of the millipedes of North and Middle America. Virginia Museum of Natural History, special publication, 8: 1-584. Martinsville

Loomis, H. F. (1937). Crested millipeds of the family Lysiopetalidae in North America, with Descriptions of new genera and species. Proceedings of the United States National Museum, 84(3006): 97-135. Washington

Shelley, R. M. (1996). The milliped order Callipodida in western North America (Schizopetalidae: Tynommatinae), and a summary of the New World fauna. Entomologica scandinavica, 27: 25-64. Lund